引导。

　　When I woke up，it had already stopped raining.

　　我醒来时，雨已停了。

　　[名师点津]

　　before，after引导的时间状语从句中，由于before和after本身已表达了动作的先后关系，若主、从句表示的动作紧密相连，则主、从句多用一般过去时。

　　After he arrived in England，he worked hard to improve his English.

　　他到达英格兰之后，努力提高他的英语水平。

　　[即时演练4]　完成句子

　　①她直到把工作做完才睡觉。

　　She didn't go to bed until she had finished her work.

　　②读完那本有趣的小说之后，我就上床睡觉了。

　　I went to bed after I finished reading the interesting novel.

　　③不久他就安然无恙地回来了。

　　It was not long before he came back safe and sound.

　　6．过去完成时的常用固定句型

　　(1)主语＋had hardly/scarcely(no sooner)＋过去分词＋when/than从句(从句用一般过去时)；当hardly，scarcely，no sooner表示否定意义的词位于句首时，主句要倒装。

　　I had no sooner reached home than it began to rain.

　　＝No sooner had I reached home than it began to rain.

　　我刚到家就下雨了。

　　(2)It was＋一段时间＋since从句(从句用过去完成时)

　　It was at least three months since I had left Beijing.

　　我离开北京至少有3个月了。

　　(3)It was the first/second/...time＋(that)从句(从句用过去完成时)

　　It was the first time that I had chatted online in English.

　　那是我第一次用英语在网上聊天。

　　(4)主句(过去完成时)＋by the time...(一般过去时)

We had got everything ready by the time they arrived.